We have a clean target in our build file, won't use clean in core build.xml
Author: Florian Grandel <jerico.dev@gmail.com>
Index: libxdoclet-java-1.2.3/core/build.xml
===================================================================
--- libxdoclet-java-1.2.3.orig/core/build.xml	2008-12-23 04:39:16.000000000 -0200
+++ libxdoclet-java-1.2.3/core/build.xml	2008-12-23 04:40:17.000000000 -0200
@@ -148,6 +148,7 @@
         <delete dir="${core.build.dir}"/>
         <delete dir="${dist.src.dir}"/>
         <delete dir="${dist.lib.dir}"/>
+	<ant dir="${modules.dir}/xdoclet" target="clean"/>
     </target>
 
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